iPhone 15 vs Samsung Galaxy S24 — Which One to Buy?

Apple's base flagship in 2023 was a redesign rather than a refresh. The 6.1-inch Super Retina XDR display brought the Dynamic Island down out of the Pro line, and the charging port moved to USB-C, which removed the most persistent complaint about the cheaper iPhone. A listing for a spells out exactly that specification set — 6.1-inch Super Retina XDR display, Dynamic Island, USB-C, dual camera, no SIM restrictions — and it is a fair description of what the whole range looks like.

The A16 Bionic chip is the other headline, and the sample listings mention it by name, describing the phone as having a dual camera system with wide and ultra wide lenses. Two cameras sounds like a downgrade against a triple-camera Android phone until you use it, because the ultra wide on this phone produces shots that are close to the quality of the main lens in daylight rather than a novelty wide-angle smear.

The camera: 48MP, two lenses, and why it works

The listings consistently describe the iPhone 15's camera as 48MP — one seller note pairs the 6.1-inch screen and iOS with a and an 87% battery figure. That 48MP sensor is a meaningful upgrade over the 12MP main camera in the iPhone 14, and it does three things: it crops well enough to give you a usable 2x zoom without a third lens, it holds up in low light by gathering more light, and it gives you the Digital Zoom button on the camera app something to work with.

What it does not do is anything a Samsung user would call computational. You get no 100x space zoom, no 30x on a phone with three cameras. In exchange you get a camera where you press the shutter, the photo is right, and you never think about it. For most people that trade is worth more than the extra focal lengths.

The awkward middle: iPhone 15 versus iPhone 15 Pro

This is where most buyers make a mistake that costs them money. The used market for Pro models at this price is polluted, and the sample we pulled shows exactly why: a is explicitly sold for parts because of an iCloud account lock, and a is brand new but still SIM-locked to Verizon. Neither is a bargain, and both are priced to look like one.

A locked or parts-only Pro is a much worse purchase than a clean base iPhone 15 at a similar number. This is worth repeating because it is the single most common trap in the Apple side of the used market: an attractive price is not a deal if the device cannot be activated by you. Check for the words locked, iCloud account, MDM and for parts in every description before you look at anything else.

Samsung's 2024 base flagship is the more spec-forward of the two on paper, and the listings back that up. The new is described as an unlocked Android 14 handset with a 6.2-inch display, a 50MP rear camera, 128GB of storage and 8GB of RAM. A more technical listing for a gives the full chassis spec: 147.0 by 70.6 by 7.6 millimetres, 167 grams, Gorilla Glass Victus 2 on both front and back, an aluminium frame, and an IP68 rating for water resistance up to 1.5 metres for 30 minutes.

That is a well-built phone. The aluminium frame, the Victus 2 glass on the back as well as the front, and the ultrasonic in-display fingerprint sensor all read as premium choices, and the 8GB of RAM matters more for longevity than the megapixel comparison suggests. One 128GB listing even itemises the package contents — device and charging cable, no SIM card, no headphones, no original box — which is normal for a certified used dealer and worth knowing before you compare it to a boxed unit.

Seven years of updates is the headline nobody argues with

Samsung committed to seven years of OS and security updates for the S24 series. That is the single most concrete advantage the Galaxy has over the iPhone in this comparison, because it means a phone bought today should still be receiving security patches well into the 2030s. If you keep a phone for five or six years, that is decisive. If you upgrade every two or three years, it is close to irrelevant.

Everything else about Android is a matter of taste rather than capability. The S24 launched on Android 14 with Samsung's skin on top, which is heavily customised, and the honest observation is that Samsung's interface still carries more preinstalled software than iOS does. None of that is a dealbreaker, and all of it is something you either live with happily or cannot live with at all.

The S24 family, and where the Plus actually lands

The S24 range is wider than the iPhone 15 range, and the used listings show that width as a genuine price advantage. The base 128GB S24 was turning up between roughly $275 and $330 depending on cosmetic grade — a described as very good condition with no scratches or screen cracks is the cleanest of them. The S24 Plus 256GB was listed at $324 and $331. The S24 FE 128GB was at $279.99 with the original box and a Speck case, or $319.99 as a phone-only unit described as excellent condition. And the appeared in fair cosmetic condition, fully functional and professionally evaluated.

That last number deserves a second look. An Ultra-grade device at a price under what the base model costs new on paper is the kind of arithmetic that makes the Galaxy side of this comparison genuinely competitive — provided you are honest with yourself about the cosmetic condition you are accepting. If you want the biggest screen and the best camera array for the least money and you can live with visible wear, this is where the S24 wins outright.

The table below is the comparison that matters. It deliberately omits the columns that are identical or near-identical, because a spec sheet that lists twenty-four rows where nine say the same thing is a way of avoiding a decision.

Parameter	iPhone 15	Samsung Galaxy S24
Display	6.1-inch Super Retina XDR, Dynamic Island	6.2-inch Dynamic LTPO AMOLED
Main camera	48MP wide plus ultra wide, two lenses	50MP rear, additional lenses on higher trims
Memory	Not published by Apple	8GB RAM
Storage seen used	128GB and 256GB	128GB and 256GB
Port	USB-C	USB-C
Water resistance	Not stated in the listings we pulled	IP68, up to 1.5m for 30 minutes
Frame and glass	Not stated in the listings we pulled	Gorilla Glass Victus 2 front and back, aluminium frame
Unlock situation	Fully unlocked models plentiful; carrier-locked and MDM units also common	Mostly carrier-unlocked; some listings are US domestic carriers only
OS updates	Apple's standard window	Seven years committed
Weight	Not stated in the listings we pulled	167 grams

Read that table honestly and the conclusion is that the Galaxy S24 is the better-specified device on paper, and the iPhone 15 is the better-integrated one. Those are not the same claim, and pretending they are is how people end up with the wrong phone.

This is the section worth reading twice, because the listings contain far more information than a price. Every description we checked was a seller's own note, which means you are reading condition reports written by people who want the sale. Where a seller volunteers a defect, that is information. Where a seller is silent, that is not.

iPhone 15 listings: reading the condition notes

The iPhone 15 sample ranged from $100 for a described-excellent , through the $250 to $320 band where most of the volume sits, up to $399 and $400 for 256GB units. The defects that were disclosed are worth cataloguing because they tell you what to ask about.

• Battery health is disclosed more often than anything else. One was described as fully functional and unlocked with 86% battery health, but with a cracked back glass concentrated around the camera area. That pairing of a good number and a real flaw is what a trustworthy listing looks like.
• Cracked displays are the most common reason a good price looks good. A was explicitly described as having a 79% battery and a cracked screen, while still working great. A disclosed 73% battery health, minor screen scratches and dents along the edges. Neither is a bad phone; both are worse than the photos suggest if you only read the price.
• Charging faults are specific and fixable-looking but risky. The most expensive listing in the sample, a , was described as having a charging issue caused by lint in the port, with the note that a MagSafe charger does work. That is a four-hundred-dollar phone with a known charging fault and a bundled watch, which is exactly the kind of listing to think twice about.
• Locked and restricted units are everywhere in the cheap band. A came with an MDM bypass profile and an explanation of the limitations that come with it. A was described as 100% battery health but locked to T-Mobile only, with screen scratches. Carrier-locked is fine if that is your carrier and useless if it is not.
• MDM and carrier locks are different problems. One listing spells out that the phone arrives reset, bypassed and ready for setup, but still carries an MDM profile with real limitations. A carrier lock is solved with a free unlock request. An MDM profile is a different and harder conversation, and a that came with a case and a USB cable and an honest note about screen scratches is a far better use of a small budget than any restricted unit.

The clean listings exist and they are not expensive. That $305 unlocked 128GB was fully functional with a screen in very good condition and no major cracks, from a seller who was upgrading to another phone. A basic was described simply as excellent working condition. The floor of the market is not junk; it is just quiet about its flaws.

Galaxy S24 listings: same job, different vocabulary

Samsung sellers tend to use graded condition language — Excellent, Very Good, Good, Fair, B Grade — alongside specific defect callouts, and the grading is generally more informative than the equivalent iPhone listing. A was sold as very good refurbished with light cosmetic wear, a 30-day money-back guarantee and a one-business-day shipping claim. Several dealer listings pair the price with a 30-day returns promise and a graded cosmetic description, which is a more formal proposition than a private seller giving you a month of trouble.

Below that, the disclosures get specific in useful ways:

• Screen scuffs are called out by location. A was disclosed as missing its side cover, while a noted a scuff at the top left of the screen. Both included a charging cable and wall plug, and both were described as unlocked and ready for activation with any carrier.
• Heavy screen scratching is flagged in the title. A was marked "screen is heavily scratched", which is exactly the kind of disclosure you want to see before you spend three hundred dollars.
• Charging port faults appear on Galaxy too. A was graded B for a bad charging port, with the note that wireless charging still works. Same fault mode as the expensive iPhone, completely different price consequence — which is worth remembering when a seller lists a cheap S24 with a charging complaint.
• Display defects show up as spots and blur. A was described as mostly working with a black spot on the lower right of the screen and a blurry front camera.
• Unlock scope matters more than the word unlocked. Several listings specify US domestic carriers only. One lists exactly which carriers it supports, including MetroPCS, Cricket and Mint Mobile, and notes the devices are verified with Samsung Diagnostic and PhoneCheck software.

The S24 FE listings show the same discipline. A came with the original box and a Speck case and was described as excellent condition with no issues, unlocked for any carrier. A was described as excellent condition, phone only, no box or cable. Same model, forty dollars apart, and the box is most of the difference.

Here is the decision, split by who is deciding.

Buy the iPhone 15 if...

• You or anyone in your household already owns an iPhone or Mac, because the accessory and continuity cost of switching is real and ongoing.
• You care about resale. The sample supports the conventional wisdom: clean unlocked iPhone 15 units held $300 to $399 while comparable S24 units clustered at $275 to $330, and that gap usually widens when you sell.
• You take photos of things that matter and want them to look right without editing. The 48MP main sensor with a 2x crop and a good ultra wide is a coherent two-camera system rather than a compromise.
• You want MagSafe. The magnetic alignment is the feature most often missed by people moving to Android, and it is genuinely useful in a car and on a desk.
• You are comfortable with a shorter update window because you upgrade on a two to three year cycle anyway.

If you do buy the iPhone, buy it unlocked, and make sure unlocked means factory unlocked with no MDM profile attached. Do not pay flagship money for a locked unit, and do not pay $100 for a phone whose seller has not written a word about its condition. If you are weighing the newest Samsung generation rather than the discounted S24, the Samsung Galaxy S25 review is the next thing to read, since the same seven-year update argument applies one generation up.

Buy the Galaxy S24 if...

• You keep phones a long time. Seven years of OS and security updates is the strongest single argument in this comparison, and it is the one Samsung has made a point of putting in writing.
• You want more screen and more camera for less money. The S24 Ultra 256GB at $236 in fair cosmetic condition, fully functional and professionally evaluated, has no equivalent in the iPhone sample at that price.
• You are on an Android household already, or you dislike the constraints of a closed file system and a curated app store.
• You care about physical build. The listing specs for the S24 include Gorilla Glass Victus 2 on the front and back, an aluminium frame, IP68 water resistance and 167 grams of weight, which is a more explicit bill of materials than the iPhone listings describe.
• You want 8GB of RAM, which is a genuine advantage for keeping more apps resident over a five-year life.

If you do buy the Galaxy, pay attention to the unlock scope. A device that is unlocked for US domestic carriers only is fine for almost everyone in this market, but read the line before you assume it. And remember that capacity is where the money goes, but not in a tidy way: in our sample a 256GB S24 at $325 sat below a 128GB S24 at $330, and a 256GB iPhone 15 at $399 was close to a 128GB at $400. Cosmetic grade and condition were driving price more than capacity, which is the opposite of what the new-phone market would suggest.

Pick the iPhone 15 if your household is already Apple and you care about resale and a camera that just works. Pick the Galaxy S24 if you keep phones for years, want the most hardware for the money, or are starting from Android. At $275 to $330 for a clean unlocked unit on either side, the used market has removed the excuse that the Galaxy is only worth buying new, and it has made the base iPhone 15 a genuinely good value rather than a compromise.

Whatever you choose, buy it unlocked, buy it with a disclosed battery health figure, and buy it with a screen you have seen photographed under normal light. Those three checks will save you more money than any amount of spec-sheet research. There is also a fourth option worth naming, and it is often the smartest one: buy neither flagship model and spend the same money on a clean used phone from a year or two earlier. At these prices the gap between a two-year-old flagship and a four-year-old flagship is small enough that two more years of battery life usually beat two more years of camera. And the caveat that applies to every price in this article: eBay prices change and vary by seller and condition, so re-confirm the listing before you commit.